“Would you go OTD and eat treif if some random people told you they think something you are eating is treif?
Would you go OTD and be mechallel Shabbos if some random people told you they think something you are doing is chillul Shabbos? “
No, but I know people who would and did, for exactly that reason. I would be extremely embarrassed if they did it in public. Someone actually did that to me in college, and it turned out SHE was mistaken, the food item I was eating had recently acquired a hechsher (which I knew, which was why I was eating it!). She actually grabbed it out of my hand and flung it to the ground. GOOD JOB! Did NOT apologize or pay for the item.
If someone thought i was eating treif, or being M”Sh, I would hope they would take me aside and ask me what I was doing, and let me know their concern in a “I had heard some time ago that this item is no longer kosher – when did they announce that it was under hechsher again?” type of way. That lets me know there might be a problem, and also that the person is assuming l’kaf zechus that I know it is ok again,rather than their criticizing me for eating it. The next step is up to me.